F3726, F3211, F3174, R5135, R3816-HP Firewalls and UTM Devices Network Management Configuration Guide-6PW100

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51BConfiguring IPv6 BGP
The term "router" in this document refers to both routers and routing-capable firewalls and UTM devices.
IPv6 BGP can be configured only at the CLI.
This chapter describes only configuration for IPv6 BGP. For BGP-related information, see "Configuring
BGP."
299B
Feature and hardware compatibility
Hardware IPv6 BGP com
p
atible
F1000-A-EI/F1000-S-EI Yes
F1000-E Yes
F5000 Yes
Firewall module Yes
U200-A Yes
U200-S No
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Overview
BGP-4 can only carry IPv4 routing information.
To support multiple network layer protocols, IETF extended BGP-4 by introducing Multiprotocol Border
Gateway Protocol (MP-BGP). MP-BGP for IPv6 is called "IPv6 BGP" for short.
IPv6 BGP puts IPv6 network layer information into the attributes of Network Layer Reachability
Information (NLRI) and NEXT_HOP.
The NLRI attribute of IPv6 BGP involves the following:
• MP_REACH_NLRI—Multiprotocol Reachable NLRI, for advertising reachable route and next hop
information.
• MP_UNREACH_NLRI—Multiprotocol Unreachable NLRI, for withdrawal of unreachable routes.
The NEXT_HOP attribute of IPv6 BGP is identified by an IPv6 unicast address or IPv6 local link address.
IPv6 BGP has the same messaging and routing mechanisms as BGP.
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IPv6 BGP configuration task list
Task Remarks
2959H
Configuring IPv6
BGP basic
functions
2960H
Specifying an IPv6 BGP peer Required
2961H
Injecting a local IPv6 route Optional
2962H
Configuring a preferred value for routes from a peer or peer group Optional